proc bind_all(ubos: seq[UBO]) {....raises: [Exception], tags: [RootEffect].}

proc bind_it(self: UBO; rebind = false) {....raises: [Exception],
    tags: [RootEffect].}

proc bind_to_prog(self: UBO; prog: GLuint; block_index: GLuint) {.inline,
    ...raises: [Exception, ValueError], tags: [RootEffect].}

proc check(self: UBO; prog: GLuint; block_index: GLuint) {.
    ...raises: [Exception, ValueError], tags: [RootEffect].}

proc destroy(self: UBO) {....raises: [Exception], tags: [RootEffect].}

proc get_index(self: UBO; prog: GLuint): GLuint {....raises: [Exception],
    tags: [RootEffect].}

proc initUBO[T](self: UBO; renderer: RenderManager; name: string;
                utype: typedesc[T]; count: int): UBO

proc len[T](self: UBO; utype: typedesc[T]): int

proc newUBO[T](engine: MyouEngine; name: string; utype: typedesc[T]; count: int): UBO

proc newUBO[T](renderer: RenderManager; name: string; utype: typedesc[T];
               count: int = 1): UBO

proc resize[T](self: UBO; utype: typedesc[T]; count: int)

proc set_prog_index(self: UBO; prog: GLuint; block_index: GLuint) {.inline,
    ...raises: [Exception, ValueError], tags: [RootEffect].}

proc unbind(self: UBO) {....raises: [Exception], tags: [RootEffect].}

proc update(self: UBO) {.inline, ...raises: [Exception], tags: [RootEffect].}

template is_valid(block_index: GLuint): bool

template storage[T](self: UBO; utype: typedesc[T]): ArrRef[T]